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3 years ago

Is this a physical or chemical change?? please help ASAP!!!

Chemistry

1 answer:

Leona [35]3 years ago

5 0

Answer:

chemical

Explanation:

It is breaking down the molecules. That's chemistry

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NISA [10]

Answer:

B: +3

Explanation:

If Gallium loses 3 electrons, it will become an ion.

The ion will be positively charged because in this new ion, the number of electrons is lesser than the number of protons. The charge difference will impart a positive net charge on the ion.

In a neutral atom, the number of electrons and protons are the same.
For positively charged ions, the number of protons is greater than the electrons

If Gallium the loss of 3 electrons offsets the charge balance in the chemical specie. Thus, the ion will have a net +3 charge.

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3 years ago

Nuclear energy is produced when scientists force uranium (U) atoms to break apart. With this in mind, examine the list below. If

NISA [10]

The answer is a compound because it is only a compound that can be broken to elements. for eg. H2o is a compound and be broken to element of 2 molecules of hydrogen and oxygen

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3 years ago

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A solid substance that has a naturally geometric shape with symmetrically arranged plane faces

Arisa [49]

It is a Crystalline

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3 years ago

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Compose one to two typewritten paragraphs summarizing the content of your poster. a) Explain in detail what happens as thermal e

vladimir2022 [97]

sad. no one answered this

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3 years ago

(NEED HELP IMMEDIATELY) In a gene, which base sequence codes for two amino acids?

Leni [432]

Answer:

$\boxed {\boxed {\sf 3. \ GAGCTC}}$

Explanation:

Amino acids are the monomers or building blocks of protein. Proteins are created during protein synthesis according to the genetic information or DNA in an organism.

The DNA is translated to messenger RNA in the nucleus. It travels to the ribosome. There, the mRNA is "read off" in threes. Three nucleotides make up a codon. Transfer RNA with the corresponding anticodon and an amino acid attaches to the codon and a chain of amino acid forms.

If 3 nucleotides make 1 codon which makes 1 amino acid, then we need double that or 6 nucleotides to make 2 amino acids.

The only answer choice with 6 nucleotides is Choice 3: GAGCTC

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3 years ago